Medium-term changes in Drosophila subobscura chromosomal inversion polymorphism: a possible relation with global warming?

Zivanovic, Goran; Arenas, C.; Mestres, Francesc

doi:10.1007/s12041-015-0523-z

Cited by 6 publications

(3 citation statements)

References 20 publications

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“…Studies of the Drosophila genus have proved it to be an excellent biological model (Levitan 2003;Levitan & Etges 2005;Umina et al 2005;Overgaard et al 2014;Tobler et al 2015). The D. subobscura species has been especially interesting due to its rich chromosomal inversion polymorphism and the accumulation of a large number of studies carried out in different biogeographic areas, over time (Orengo & Prevosti 1996;Rodríguez-Trelles & Rodríguez 1998;Solé et al 2002;Balanyà et al 2004Balanyà et al , 2006Balanyà et al , 2009Rezende et al 2010;Zivanovic & Mestres 2011;Zivanovic et al 2012Zivanovic et al , 2015Orengo et al 2016). However, it was scientifically valuable to study the chromosomal inversion polymorphism of this species in an isolated place with low gene flow, such as the island of Madeira.…”

Section: Discussionmentioning

confidence: 99%

“…It presents a rich chromosomal polymorphism, that is, a large number of different inversions and combinations of inversions (overlapped or not) called arrangements (Krimbas 1992(Krimbas , 1993Balanyà et al 2009). This polymorphism is adaptive to many environmental conditions and many inversions (and arrangements) have changed in frequency according to global warming expectations (Orengo & Prevosti 1996;Rodríguez-Trelles & Rodríguez 1998;Solé et al 2002;Balanyà et al 2004Balanyà et al , 2006Balanyà et al , 2009Rezende et al 2010;Zivanovic & Mestres 2011;Zivanovic et al 2012Zivanovic et al , 2015Orengo et al 2016). All these studies have been carried out either in populations located on the continent or on islands close to the mainland.…”

Section: Introductionmentioning

confidence: 99%

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Global warming and chromosomal inversion adaptation in isolated islands: Drosophila subobscura populations from Madeira

Madrenas

Balanyà

Arenas

et al. 2020

Entomological Science

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Global warming is an environmental phenomenon to which species must adapt to survive. Drosophila subobscura presents an adaptive capacity due to its chromosomal inversion polymorphism. Until now, the impact of global warming on this polymorphism has been studied in D. subobscura populations located either on a continental mainland or on islands not far from a continent. In this context, gene flow could be a relevant mechanism allowing the movement of thermally adapted inversions between populations. Our aim was to sample and study the chromosomal polymorphism on Madeira, a small isolated island in the Atlantic Ocean. We compared our findings with those reported in the same location approximately four and five decades ago. Moreover, we studied whether global warming has occurred on this island by analyzing mean, maximum and minimum temperatures over a 55‐year period. All atmospheric parameters have increased significantly, consistent with climate change expectations. Frequencies and chromosomal thermal index values of thermal adapted inversions remained quite stable over years. Furthermore, J, U and O chromosomes are almost fixed for “warm” adapted inversions. Thus, if there is little genetic variability remaining and temperatures continue increasing, island populations of D. subobscura might be on the threshold of endangerment. However, apart from selection, genetic drift and inbreeding, other processes, such as phenotypic plasticity or thermoregulatory behavior, could be involved in the survival of the species’ populations. Finally, although in danger, D. subobscura is a generalist that lives in humanized environments, and this fact could favor its persistence on Madeira Island.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Global warming and chromosomal inversion adaptation in isolated islands: Drosophila subobscura populations from Madeira

Madrenas

Balanyà

Arenas

et al. 2020

Entomological Science

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“…Later, a large number of chromosomal inversions polymorphism studies in different populations of this species validated the effect of natural selection on 'warm' and 'cold' inversions due to global warming (for instance, Rodriguez-Trelles and Rodriguez 1998;Sole ´et al 2002;Balanya `et al 2004Balanya `et al , 2006Balanya `et al , 2009Rego et al 2010;Dolgova et al 2010;Zivanovic and Mestres 2011;Orengo et al 2016;Galludo et al 2018). Nevertheless, it is valuable to analyse the isolated or marginal populations to measure changes of inversion frequencies according to temperature and other environmental factors (Zivanovic et al 2012(Zivanovic et al , 2015(Zivanovic et al , 2016(Zivanovic et al , 2021Madrenas et al 2020). Further, it would be relevant to study the changes in this polymorphism in some regions of D. subobscura distribution with particular climatic and environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

Long-term changes in the inversion chromosomal polymorphism: Drosophila subobscura population from Rasht (north of Iran)

Khadem

Arenas

Balanyà

et al. 2022

J Genet

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Drosophila subobscura is characterized by a rich chromosomal polymorphism for inversions. Many inversions are adaptive to global warming and can be classified as 'warm' or 'cold' adapted. However, most studies were carried out from European populations located in the central area of the species distribution or from American colonizing populations. For this reason, we aimed to analyse the isolated and marginal Rasht population, located in the Hyrcanian forests area (Iran). The chromosomal polymorphism for inversions was compared with the previous Rasht samples (Rasht I and II) obtained 57 years ago. This polymorphism has changed based on the inversion composition and frequencies. Interestingly, the polymorphism for inversions was scarce and similar to that of Madeira, an isolated Atlantic island. Likely, this similarity is a consequence of the marginal location and isolation of the Rasht population. Also, the chromosomal thermal index (CTI) was 0.445, showing a significant increase over those from Rasht I (0.184) and II (0.210). All these observations were in agreement with the global warming expectations. Moreover, the CTI was also computed for Russian Caucasus and Turkish populations collected more than 40 years ago to better understand the adaptive potential of D. subobscura and to study the similarity between populations of different geographic areas. In summary, the inversions of D. subobscura also changed in marginal and isolated populations in agreement with the global warming expectations, and an open question is to know where is the threshold for this evolutionary change.

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Climatic adaptation of chromosomal inversions in Drosophila subobscura

et al. 2018

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Drosophila subobscura is a species with a rich chromosomal polymorphism which is adaptive to different climatic conditions. Five samples of the Font Groga population (Barcelona, Spain) were sampled in autumn during 5 consecutive years (2011-2015) to obtain their inversion chromosomal polymorphism, and climatic data of several meteorological variables were also collected. The aim was to analyze the adaptive potential of inversions with regard to climatic variables, being the most relevant: mean temperature (T), maximum temperature (T), minimum temperature (T), humidity (Hm) and rainfall (Rf). As expected, no significant variation in inversion frequencies were detected over this short period of time. However, from a climatic point of view it was possible to differentiate 'warm' and 'dry' from 'cold' and 'humid' samples. The joint study of maximum (T) and minimum (T) temperatures was a key element to understand the effect on adaptation of many inversions. It was also observed that temperature had to be considered in conjunction with humidity and rainfall. All these factors would condition the biota of D. subobscura habitat, and chromosomal inversions could provide an adaptive response to it.

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Medium-term changes in Drosophila subobscura chromosomal inversion polymorphism: a possible relation with global warming?

Cited by 6 publications

References 20 publications

Global warming and chromosomal inversion adaptation in isolated islands: Drosophila subobscura populations from Madeira

Global warming and chromosomal inversion adaptation in isolated islands: Drosophila subobscura populations from Madeira

Long-term changes in the inversion chromosomal polymorphism: Drosophila subobscura population from Rasht (north of Iran)

Climatic adaptation of chromosomal inversions in Drosophila subobscura

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